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Electronic structure of graphene on hBN

Speaker: 
Marcin Mucha-Kruczynski (Bath University, UK)
Date: 
Mon, 02/06/2014 - 3:20pm to 4:00pm
Location: 
Graphene Seminar Room (S16 level 6)
Host: 
Goki Eda
Event Type: 
Seminars

Abstract

The heterostructures of graphene with other hexagonal layered crystals or crystals with hexagonal symmetry facets feature moiré patterns which are the result of incommensurability of the periods of the two two-dimensional lattices, or their misalignment. Using the already realised example of highly aligned graphene/hexagonal boron nitride heterostructures, I will investigate the influence of moiré potential on graphene electrons and formation of the electronic minibands. I will also discuss how competition between the quantising effects of the superlattice potential and magnetic field influences electron states resulting in a complex fractal spectrum.

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